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Allow GDB 6 to backtrace over a syscall

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svn path=/trunk/; revision=8926
This commit is contained in:
Gé van Geldorp 2004-03-29 22:29:34 +00:00
parent bdf6b9b5b7
commit 3c8dee1caa
1 changed files with 26 additions and 1 deletions
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27
reactos/ntoskrnl/ke/i386/syscall.S
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: syscall.S,v 1.12 2003/06/20 16:21:11 ekohl Exp $
/* $Id: syscall.S,v 1.13 2004/03/29 22:29:34 gvg Exp $
*
* FILE: ntoskrnl/hal/x86/syscall.s
* PURPOSE: 2E trap handler
@ -28,6 +28,7 @@
#include <ddk/status.h>
#include <internal/i386/segment.h>
#include <internal/ps.h>
#include <roscfg.h>
#define KernelMode (0)
#define UserMode (1)
@ -92,9 +93,17 @@ L3:
pushl $0 /* XXX: TempCS */
pushl $0 /* XXX: DebugPointer */
pushl $0 /* XXX: DebugArgMark */
#ifdef DBG
/* Trick gdb 6 into backtracing over the system call */
movl 4(%ebp), %ebx
pushl %ebx /* DebugEIP */
movl (%ebp), %ebx
pushl %ebx /* DebugEBP */
#else
movl 0x60(%esp), %ebx
pushl %ebx /* DebugEIP */
pushl %ebp /* DebugEBP */
#endif
/* Load the segment registers */
movl $KERNEL_DS, %ebx
@ -134,6 +143,14 @@ L3:
new_serviceInRange:
#ifdef DBG
/* GDB thinks the function starts here and
wants a standard prolog, so let's give it */
pushl %ebp
movl %esp,%ebp
popl %ebp
#endif
/* Allocate room for argument list from kernel stack */
movl %es:_KeServiceDescriptorTable + 12, %ecx
movl %es:(%ecx, %eax, 4), %ecx
@ -184,6 +201,14 @@ new_useShadowTable:
new_shadowServiceInRange:
#ifdef DBG
/* GDB thinks the function starts here and
wants a standard prolog, so let's give it */
pushl %ebp
movl %esp,%ebp
popl %ebp
#endif
/* Allocate room for argument list from kernel stack */
movl %es:_KeServiceDescriptorTableShadow + 28, %ecx
movl %es:(%ecx, %eax, 4), %ecx